Triaxis® mainstream rotary position sensor IC (Analog/PWM/SPI)
MLX90316 Melexis
The MLX90316 is a Triaxis® rotary position sensor IC providing the angular position of a small dipole magnet rotating above the device surface (end-of-shaft magnet), targeting non-contacting rotary position sensor applications in automotive and industrial systems.
Top features
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Absolute rotary position sensor IC
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Simple and robust magnetic design
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Programmable angular range up to 360 degrees
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Selectable output mode: analog (ratiometric), PWM or serial protocol (SPI)
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12-bit angular resolution over 360 degrees
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10-bit angular thermal accuracy
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40-bit ID number
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-40°C to 150°C ambient temperature range
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Broken-track diagnostic (open-Vdd, open-Vss)
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On-chip diagnostics
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Single die SOIC-8 package RoHS compliant
- Dual die (full redundant) TSSOP-16 package RoHS compliant
Product description
The MLX90316 is a Triaxis® rotary position sensor IC providing the angular position of a small dipole magnet rotating above the device surface (end-of-shaft magnet). Thanks to an IMC on its surface, the monolithic device senses, in a contactless fashion, the horizontal component of the applied magnetic flux density.
This unique sensing principle applied to a rotary position sensor results into an impressive robustness of the angular position over the mechanical (air-gap, off-axis) tolerances. The rotation of this horizontal component is sensed over a wide range (up to 360º) and processed by the on-chip DSP to ultimately report the absolute angular position of the magnet either as a ratiometric analog output or as Pulse-Width Modulation (PWM) signal or as a 14-bit data accessible through a 3-pin SPI (serial interface) channel.
The output transfer characteristic is fully programmable (e.g. offset, gain, clamping levels, linearity, thermal drift, filtering, range, ...) to match any specific requirement through end-of-line calibration. The Melexis programming unit PTC-04 communicates and calibrates the device exclusively through the connector terminals (Vdd-Vss-Out).
The MLX90316 targets a myriad of non-contacting rotary position sensor applications which are frequently seen in automotive and industrial systems. This device is available in single and dual redundant implementations to cost-effectively address the full range of applications, including safety critical sensing requirements.
Features and benefits
-
Absolute rotary position sensor IC
-
Simple and robust magnetic design
-
Programmable angular range up to 360 degrees
-
Selectable output mode: analog (ratiometric), PWM or serial protocol (SPI)
-
12-bit angular resolution over 360 degrees
-
10-bit angular thermal accuracy
-
40-bit ID number
-
-40°C to 150°C ambient temperature range
-
Broken-track diagnostic (open-Vdd, open-Vss)
-
On-chip diagnostics
-
Single die SOIC-8 package RoHS compliant
- Dual die (full redundant) TSSOP-16 package RoHS compliant
Documents and tools
Application note(s)
Product flyer(s)
Selection guide(s)
IC handling and assembly
Magnet suppliers
Related tech talks
Videos
Back-end calibration of magnetic position sensors
This video explains the concept of the back-end calibration: a feature of our magnetic position sensors that allows you to compensate for non-linearity error in your application. Different methods of calibration and examples are presented. This will help you understand how to use the calibration and why you may need it.
